Pollen of anemophilous plants are

Options

A. Large and heavy
B. Small and sticky
C. Small, dry and unwettable
D. Large, light and hygroscopic.

Answer

To answer the question "Pollen of anemophilous plants are," we need to analyze the characteristics of pollen grains produced by plants that rely on wind for pollination (anemophily).

### Step-by-Step Solution:

1. **Understanding Anemophily**: Anemophilous plants are those that use wind as a means of pollination. This means that their pollen grains must be adapted to be carried easily by the wind.

2. **Characteristics of Pollen Grains**:
- **Size**: Pollen grains of anemophilous plants are typically small. This small size allows them to be easily lifted and carried by the wind.
- **Texture**: The pollen grains are usually dry and non-sticky. This is important because sticky pollen would not disperse well in the air; it would clump together instead.
- **Unwettable**: Anemophilous pollen grains are unwettable, meaning they do not absorb moisture easily. This characteristic helps them remain airborne and not clump together when exposed to humidity.

3. **Elimination of Incorrect Options**:
- **Option 1 (Large and Heavy)**: This is incorrect because large and heavy pollen would not be easily carried by the wind.
- **Option 2 (Small and Sticky)**: This is also incorrect since sticky pollen would not disperse effectively in the air.
- **Option 4 (Large, Light, and Hygroscopic)**: While light pollen is beneficial, being large and hygroscopic (able to absorb moisture) contradicts the characteristics of anemophilous pollen.

4. **Conclusion**: Based on the analysis, the correct answer is that pollen grains of anemophilous plants are **small, dry, and unwettable**.

### Final Answer:
The correct option is **3. Small, dry, and unwettable**.